How to remove carbon deposit from Yamaha 30 outboard engine

The method of removing carbon deposit is as follows:

1. Throttle: Take off the engine decorative cover, remove the throttle, clean it with carburetor cleaner, dry it with cotton cloth and install it.

2. Inside the engine: open the engine oil cover, pour the whole tank of cleaning agent (mixed with old engine oil), cover the engine oil cover, shut down the engine after idling for 10 minutes, and clean the carbon deposit inside the engine, so that the cleaning agent can dissolve sludge, colloid, moisture, metal chips and other deposits inside the engine.

3. Oil circuit: Before refueling, add a whole bottle of fuel additive to the fuel tank. Usually, a bottle of fuel additive is used in a 50-80 liter fuel tank. Cleaning the carbon deposit in the oil circuit includes cleaning the fuel injector, combustion chamber, spark plug, throttle and other parts.

4. Air intake system: buy a bottle of cleaning agent for air intake system, pour it into the liquid storage tank of special cleaning equipment, connect the air intake system, and suck the cleaning agent into the air intake by vacuum to achieve the purpose of cleaning.